Association of maternal SARS-CoV-2 infection at the time of admission for delivery with labor process and outcomes of vaginal birth: A cohort study.

"for example parity induction of labor and use of epidural analgesia may influence the duration of labor (data s1 p 1).; therefore we adjusted our analyses for possible confounders; the full analyses results are presented in data s1 .; data s2 presents some additional analyses.; these suggest that the duration of labor might be a strong mediator between covid-19 positivity in labor and grade iii meconium-stained amniotic fluid (data s2 p 2).; the details of post-hoc power analyses and sample size calculations we conducted are presented in data s3 .; data s1.; data s2.; data s3."

"CONFLICT OF INTEREST STATEMENT The authors have stated explicitly that there are no conflicts of interest in connection with this article."

"FUNDING INFORMATION This study is supported by Natural Science Research Project of Universities of Anhui Province (KJ2020A1219) and School‐level quality engineering project of University of Science and Technology of China in 2022 (2022xjyxm091)."